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DC conversion system and DC conversion system control method

A DC conversion and controller technology, applied in the direction of converting DC power input to DC power output, control/regulation systems, output power conversion devices, etc., can solve problems such as reducing system performance reliability, affecting component selection and thermal design, etc. , to reduce voltage stress, solve voltage unevenness, and reduce costs

Active Publication Date: 2021-10-26
DELTA ELECTRONICS (SHANGHAI) CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0003] If the phenomenon of uneven pressure occurs, it will affect the selection of components and thermal design, and it will easily reduce the system performance and operational reliability. Therefore, how to ensure equal pressure is one of the important issues in this field.

Method used

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  • DC conversion system and DC conversion system control method
  • DC conversion system and DC conversion system control method
  • DC conversion system and DC conversion system control method

Examples

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Embodiment Construction

[0096] The following examples are described in detail with the accompanying drawings in order to better understand the aspect of the present case, but the provided examples are not intended to limit the scope of this disclosure, and the description of the structure and operation is not intended to limit it. The sequence of execution and any recombination of components to produce devices with equivalent functions are within the scope of the present disclosure. In addition, according to industry standards and common practice, the drawings are only for the purpose of assisting explanation, and are not drawn according to the original scale. In fact, the dimensions of various features can be arbitrarily increased or decreased for the convenience of illustration. In the following description, the same components will be described with the same symbols for easy understanding.

[0097] The terms (terms) used throughout the specification and patent claims generally have the ordinary me...

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Abstract

The invention discloses a DC conversion system and a control method of the DC conversion system. The control method of the DC conversion system includes: measuring the output signal of the DC conversion system by an output sensor; measuring at least one of a plurality of power conversion modules by a plurality of input voltage sensors Multiple input voltage signals on multiple first sides of the conversion units connected in series; the controller receives the output signal and these input voltage signals; the controller generates the first control signal according to the output signal and the output reference signal; the controller generates the first control signal according to The input voltage signal generates a plurality of input reference voltage signals; the controller performs voltage equalization control according to the input voltage signal and the input reference voltage signal to generate a plurality of second control signals; the controller responds according to the first control signal and the second control signal One of them outputs a corresponding modulation signal to control a plurality of switches corresponding to one of the conversion units. The invention does not increase the hardware voltage equalizing circuit, and solves the problem of voltage unevenness through a control method.

Description

technical field [0001] The content of the present invention relates to a circuit and a control method, and in particular to a DC conversion system and a control method of the DC conversion system. Background technique [0002] In the DC conversion system, in order to ensure the stable operation of the DC conversion system, it is necessary to balance the voltage of each power conversion module at the series connection and balance the current at the parallel connection. [0003] If the phenomenon of uneven pressure occurs, it will affect the selection of components and thermal design, and it will easily reduce the system performance and operational reliability. Therefore, how to ensure equal pressure is one of the important issues in this field. Contents of the invention [0004] One aspect of the present disclosure relates to a DC conversion system including a plurality of power conversion modules, an output sensor, a plurality of input voltage sensors and a controller. An...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353
Inventor 张怡陈尔东肖宏伟王钊周翩应建平刘腾
Owner DELTA ELECTRONICS (SHANGHAI) CO LTD
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